Levels in World Five of New Super Mario Bros. for the Wii

5-1

• World 5 is a tropical rainforest featuring bizarre plants, annoying bramble vines and poisonous purple water. The first level includes Stalking Piranha Plants and River Piranha Plants, two troublesome plant species. Use fireballs to destroy the plants or simply swing from vines to get past them. You'll also find large Koopa shells that contain coins and secret rooms.  

5-2

• World 5's second level features an abundance of enormous Wigglers. While relatively harmless, these giant caterpillars can act as trampolines, helping Mario and Luigi get across puddles of purple goo. Of course, jumping on the Wigglers makes them angry, causing them to move faster and to become even more of a nuisance. But you'll need to jump on a Wiggler at the end of the level to reach the final goal. 

5-3

• In this level, you'll have to navigate a river of poisonous purple water, jumping from one log to the next while avoiding enemies like the bramble-armed Bramballs. Try to walk under the Bramballs; alternatively, you can jump on their round, suspended bodies to defeat them. This level also has plenty of hidden items, including Star Coins, red coins, Fire Flowers and even a 1-up Mushroom tucked away in a lone brick.

5-4

• This level requires you to ride a wooden plank across the toxic water. Enemies, including Goombas and Koopa Troopas, will try and land on the plank to slow it to a halt. You'll have to force the enemies off the plank to start moving again. The Ice Flower can be a big help in keeping enemies at bay.

5-5

• The fifth level takes place in the air. You'll have to jump from one flying Jumbo Ray to the next, all while Bullet Bills try to shoot you from the sky. You can find items like Ice Flowers and Propeller Blocks hidden in the surrounding clouds. 

Other Levels

• World 5 also contains three bonus levels, including two castles and one haunted ghost house. Iggy Koopa, the World 5 boss, guards both castles. The ghost house plays more like a maze, with numerous doors in each room and most paths ending in dead ends. However, you can also find a secret cannon in the ghost house that shoots Mario all the way to World 8.